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Other Operating Income, net (Tables) | 12 Months Ended
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Dec. 31, 2016
Other Income and Expenses [Abstract] |
Schedule of Other Operating Income, net |
Year ended December 31, |  | 2016 |  |  | 2015 |  |  | 2014 |
Gain on sale of operating assets |  | $ | 5 |  |  | $ | 113 |  |  | $ | 1 |
Frozen defined-benefit pension plan income |  |  | — |  |  |  | — |  |  |  | 1,611 |
Total other operating income, net |  | $ | 5 |  |  | $ | 113 |  |  | $ | 1,612 |

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